/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0b0e1f;
            --primary-light: #161b35;
            --primary-mid: #1e2448;
            --accent: #e94560;
            --accent-hover: #d1344f;
            --gold: #f0b840;
            --gold-light: #f8d76e;
            --bg-body: #f4f5fa;
            --bg-card: #ffffff;
            --bg-dark-alt: #0f1328;
            --text-body: #2d2d3a;
            --text-light: #f0f2f8;
            --text-muted: #7a7f94;
            --border-light: #e6e8f0;
            --shadow-sm: 0 2px 12px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 28px rgba(0,0,0,0.09);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.13);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-hover); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; color: var(--primary); }
        h1 { font-size: 2.8rem; letter-spacing: -0.02em; }
        h2 { font-size: 2.2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }
        .container { max-width: 1200px; padding-left: 1.2rem; padding-right: 1.2rem; }

        /* ===== 导航 ===== */
        .navbar-custom {
            background: var(--primary);
            padding: 0.6rem 0;
            box-shadow: 0 2px 20px rgba(0,0,0,0.3);
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .navbar-custom .navbar-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .navbar-custom .navbar-brand i {
            color: var(--gold);
            font-size: 1.8rem;
        }
        .navbar-custom .navbar-brand:hover { color: var(--gold-light); }
        .navbar-custom .nav-link {
            color: rgba(255,255,255,0.78) !important;
            font-weight: 500;
            padding: 0.5rem 1.1rem !important;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            font-size: 0.95rem;
        }
        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link:focus {
            color: #fff !important;
            background: rgba(255,255,255,0.08);
        }
        .navbar-custom .nav-link.active {
            color: #fff !important;
            background: var(--accent);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--gold);
            border-radius: 3px 3px 0 0;
        }
        .navbar-custom .navbar-toggler {
            border: 1px solid rgba(255,255,255,0.2);
            color: #fff;
            padding: 0.4rem 0.7rem;
            font-size: 1.2rem;
        }
        .navbar-custom .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(233,69,96,0.4);
        }
        .navbar-custom .navbar-toggler-icon {
            filter: invert(1);
        }
        @media (max-width: 991.98px) {
            .navbar-custom .nav-link.active::after { display: none; }
            .navbar-custom .nav-link { padding: 0.6rem 1rem !important; }
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary) url('/assets/images/backpic/back-1.png') no-repeat center center / cover;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11,14,31,0.88) 0%, rgba(11,14,31,0.55) 60%, rgba(11,14,31,0.75) 100%);
            z-index: 1;
        }
        .hero-section .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: 2rem 1.5rem;
        }
        .hero-section .hero-badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 600;
            padding: 0.35rem 1.2rem;
            border-radius: 50px;
            letter-spacing: 1px;
            margin-bottom: 1.2rem;
            text-transform: uppercase;
        }
        .hero-section h1 {
            color: #fff;
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 0.8rem;
            text-shadow: 0 4px 30px rgba(0,0,0,0.3);
        }
        .hero-section h1 span { color: var(--gold); }
        .hero-section .hero-sub {
            color: rgba(255,255,255,0.85);
            font-size: 1.2rem;
            margin-bottom: 2rem;
            line-height: 1.8;
            max-width: 620px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-section .btn-hero {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 2.4rem;
            font-size: 1.05rem;
            font-weight: 600;
            border-radius: 50px;
            border: none;
            transition: var(--transition);
            margin: 0.4rem;
        }
        .btn-hero-primary {
            background: var(--accent);
            color: #fff;
        }
        .btn-hero-primary:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(233,69,96,0.4);
        }
        .btn-hero-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.5);
        }
        .btn-hero-outline:hover {
            background: rgba(255,255,255,0.12);
            color: #fff;
            border-color: #fff;
            transform: translateY(-3px);
        }
        .hero-section .hero-stats {
            display: flex;
            justify-content: center;
            gap: 2.5rem;
            margin-top: 2.5rem;
            flex-wrap: wrap;
        }
        .hero-section .hero-stat-item {
            text-align: center;
            color: #fff;
        }
        .hero-section .hero-stat-item .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--gold);
        }
        .hero-section .hero-stat-item .label {
            font-size: 0.85rem;
            opacity: 0.72;
            margin-top: 0.15rem;
        }
        @media (max-width: 768px) {
            .hero-section { min-height: 75vh; }
            .hero-section h1 { font-size: 2.2rem; }
            .hero-section .hero-sub { font-size: 1rem; }
            .hero-section .hero-stats { gap: 1.5rem; }
            .hero-section .hero-stat-item .num { font-size: 1.6rem; }
        }
        @media (max-width: 520px) {
            .hero-section h1 { font-size: 1.8rem; }
            .hero-section .btn-hero { padding: 0.7rem 1.6rem; font-size: 0.9rem; }
        }

        /* ===== 通用板块 ===== */
        .section-padding { padding: 5rem 0; }
        .section-title { margin-bottom: 3rem; }
        .section-title h2 { font-weight: 800; margin-bottom: 0.6rem; }
        .section-title p { color: var(--text-muted); font-size: 1.05rem; max-width: 580px; }
        .section-title.text-center p { margin-left: auto; margin-right: auto; }
        .section-bg-dark {
            background: var(--bg-dark-alt);
            color: rgba(255,255,255,0.85);
        }
        .section-bg-dark .section-title h2 { color: #fff; }
        .section-bg-dark .section-title p { color: rgba(255,255,255,0.6); }
        .section-bg-light { background: var(--bg-body); }

        /* ===== 卡片 ===== */
        .card-modern {
            background: var(--bg-card);
            border: none;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
            height: 100%;
        }
        .card-modern:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .card-modern .card-img-top {
            height: 200px;
            object-fit: cover;
        }
        .card-modern .card-body { padding: 1.6rem; }
        .card-modern .card-title { font-weight: 700; font-size: 1.15rem; margin-bottom: 0.6rem; }
        .card-modern .card-text { color: var(--text-muted); font-size: 0.95rem; }
        .card-modern .card-tag {
            display: inline-block;
            background: rgba(233,69,96,0.12);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            margin-bottom: 0.7rem;
        }
        .card-modern .card-footer {
            background: transparent;
            border-top: 1px solid var(--border-light);
            padding: 1rem 1.6rem;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .card-modern .card-footer i { margin-right: 0.3rem; }

        /* ===== 分类入口卡片（大图） ===== */
        .category-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            height: 320px;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            cursor: pointer;
        }
        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .category-card .cat-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            transition: var(--transition);
        }
        .category-card:hover .cat-bg { transform: scale(1.05); }
        .category-card .cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11,14,31,0.85) 0%, rgba(11,14,31,0.15) 70%);
        }
        .category-card .cat-content {
            position: relative;
            z-index: 2;
            padding: 2rem 1.8rem;
            color: #fff;
            width: 100%;
        }
        .category-card .cat-content h3 { font-size: 1.6rem; font-weight: 700; color: #fff; margin-bottom: 0.3rem; }
        .category-card .cat-content p { opacity: 0.85; font-size: 0.95rem; margin-bottom: 0.8rem; }
        .category-card .cat-content .btn-cat {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--gold);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .category-card .cat-content .btn-cat:hover { color: #fff; gap: 0.8rem; }
        @media (max-width: 768px) {
            .category-card { height: 240px; }
            .category-card .cat-content h3 { font-size: 1.3rem; }
        }

        /* ===== 资讯列表 ===== */
        .list-item-modern {
            display: flex;
            gap: 1.2rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .list-item-modern:last-child { border-bottom: none; }
        .list-item-modern:hover { background: rgba(0,0,0,0.02); padding-left: 0.5rem; padding-right: 0.5rem; border-radius: var(--radius-sm); }
        .list-item-modern .li-thumb {
            flex-shrink: 0;
            width: 100px;
            height: 70px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--border-light);
        }
        .list-item-modern .li-thumb img { width: 100%; height: 100%; object-fit: cover; }
        .list-item-modern .li-body { flex: 1; min-width: 0; }
        .list-item-modern .li-body h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: 0.2rem; }
        .list-item-modern .li-body h4 a { color: var(--primary); }
        .list-item-modern .li-body h4 a:hover { color: var(--accent); }
        .list-item-modern .li-body .li-meta { font-size: 0.82rem; color: var(--text-muted); }
        .list-item-modern .li-body .li-meta span { margin-right: 1rem; }
        .list-item-modern .li-body .li-desc { font-size: 0.9rem; color: var(--text-muted); margin-top: 0.3rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        @media (max-width: 576px) {
            .list-item-modern { flex-wrap: wrap; }
            .list-item-modern .li-thumb { width: 100%; height: 140px; }
        }

        /* ===== 数据统计 ===== */
        .stat-grid .stat-item {
            text-align: center;
            padding: 1.5rem;
        }
        .stat-grid .stat-item .stat-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--gold);
            line-height: 1.2;
        }
        .stat-grid .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.7);
            margin-top: 0.3rem;
        }
        .stat-grid .stat-item .stat-icon {
            font-size: 2rem;
            color: rgba(255,255,255,0.15);
            margin-bottom: 0.5rem;
        }

        /* ===== 流程 ===== */
        .step-card {
            text-align: center;
            padding: 2rem 1.5rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .step-card .step-num {
            width: 50px;
            height: 50px;
            background: var(--accent);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 800;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
        }
        .step-card h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; }
        .step-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            border: none;
            margin-bottom: 0.8rem;
            border-radius: var(--radius-sm) !important;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            color: var(--primary);
            background: #fff;
            padding: 1.2rem 1.5rem;
            font-size: 1rem;
            border: none;
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--accent);
            background: #fff;
        }
        .faq-accordion .accordion-button:focus { box-shadow: none; border-color: transparent; }
        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23e94560'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
        }
        .faq-accordion .accordion-body { padding: 0.5rem 1.5rem 1.2rem; color: var(--text-muted); }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary) url('/assets/images/backpic/back-2.png') no-repeat center center / cover;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11,14,31,0.88) 0%, rgba(11,14,31,0.6) 100%);
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 4rem 1.5rem;
        }
        .cta-section h2 { color: #fff; font-size: 2.4rem; font-weight: 800; }
        .cta-section p { color: rgba(255,255,255,0.75); font-size: 1.1rem; max-width: 540px; margin: 0.8rem auto 1.8rem; }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.9rem 2.6rem;
            font-size: 1.05rem;
            font-weight: 600;
            border-radius: 50px;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: var(--transition);
        }
        .cta-section .btn-cta:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(233,69,96,0.45);
        }

        /* ===== 页脚 ===== */
        .footer-custom {
            background: var(--primary);
            color: rgba(255,255,255,0.65);
            padding: 3.5rem 0 0;
        }
        .footer-custom h5 {
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 1.2rem;
        }
        .footer-custom a {
            color: rgba(255,255,255,0.6);
            transition: var(--transition);
        }
        .footer-custom a:hover { color: var(--gold); }
        .footer-custom .footer-links li { margin-bottom: 0.5rem; list-style: none; }
        .footer-custom .footer-links { padding-left: 0; }
        .footer-custom .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 1.5rem 0;
            margin-top: 2.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-custom .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.8rem;
        }
        .footer-custom .footer-brand i { color: var(--gold); }

        /* ===== 工具类 ===== */
        .text-gold { color: var(--gold); }
        .text-accent { color: var(--accent); }
        .bg-accent { background: var(--accent); }
        .rounded-custom { border-radius: var(--radius-md); }
        .shadow-custom { box-shadow: var(--shadow-sm); }
        .gap-grid { gap: 1.8rem; }

        /* ===== 响应式微调 ===== */
        @media (max-width: 991.98px) {
            .section-padding { padding: 3.5rem 0; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .stat-grid .stat-item .stat-num { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .section-padding { padding: 2.5rem 0; }
            h2 { font-size: 1.5rem; }
            .cta-section h2 { font-size: 1.6rem; }
            .footer-custom .footer-brand { font-size: 1.2rem; }
        }
        @media (max-width: 520px) {
            .hero-section .hero-stats { flex-direction: column; gap: 0.8rem; }
            .hero-section .hero-stat-item { display: flex; gap: 0.6rem; align-items: center; justify-content: center; }
            .hero-section .hero-stat-item .label { margin-top: 0; }
        }

        /* ===== 空状态 ===== */
        .empty-state {
            text-align: center;
            padding: 2.5rem 1.5rem;
            color: var(--text-muted);
        }
        .empty-state i { font-size: 2.5rem; margin-bottom: 1rem; opacity: 0.4; }
        .empty-state p { font-size: 0.95rem; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #dc3545;
            --primary-dark: #b02a37;
            --primary-light: #f8d7da;
            --secondary: #ffc107;
            --secondary-dark: #e0a800;
            --accent: #0d6efd;
            --dark: #1a1a2e;
            --dark-soft: #16213e;
            --dark-mid: #0f3460;
            --body-bg: #f8f9fa;
            --body-text: #212529;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border-color: #e9ecef;
            --card-bg: #ffffff;
            --card-radius: 1rem;
            --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --card-shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
            --btn-radius: 0.5rem;
            --section-gap: 5rem;
            --container-max: 1280px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', Roboto, sans-serif;
        }

        /* ===== 基础重置 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            color: var(--body-text);
            background: var(--body-bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== 导航 ===== */
        .navbar-custom {
            background: var(--dark) !important;
            padding: 0.75rem 0;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
            border-bottom: 3px solid var(--primary);
        }
        .navbar-custom .navbar-brand {
            color: var(--text-white) !important;
            font-weight: 800;
            font-size: 1.5rem;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .navbar-custom .navbar-brand i {
            color: var(--secondary);
            font-size: 1.6rem;
        }
        .navbar-custom .navbar-brand:hover {
            color: var(--secondary) !important;
        }
        .navbar-custom .nav-link {
            color: rgba(255, 255, 255, 0.8) !important;
            font-weight: 500;
            font-size: 1rem;
            padding: 0.5rem 1.1rem !important;
            border-radius: 0.4rem;
            transition: all var(--transition);
            position: relative;
        }
        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link:focus {
            color: var(--text-white) !important;
            background: rgba(255, 255, 255, 0.08);
        }
        .navbar-custom .nav-link.active {
            color: var(--text-white) !important;
            background: var(--primary) !important;
            box-shadow: 0 4px 14px rgba(220, 53, 69, 0.35);
        }
        .navbar-custom .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 0.4rem 0.6rem;
        }
        .navbar-custom .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        @media (max-width: 991.98px) {
            .navbar-custom .navbar-collapse {
                background: var(--dark-soft);
                padding: 1rem;
                border-radius: 0.75rem;
                margin-top: 0.75rem;
                border: 1px solid rgba(255, 255, 255, 0.06);
            }
            .navbar-custom .nav-link {
                padding: 0.6rem 1rem !important;
            }
        }

        /* ===== Banner / Hero 内页 ===== */
        .page-banner {
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-mid) 100%);
            padding: 4rem 0 3.5rem;
            position: relative;
            overflow: hidden;
            min-height: 260px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(26, 26, 46, 0.3), rgba(26, 26, 46, 0.8));
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            color: var(--text-white);
            font-weight: 800;
            font-size: 2.8rem;
            letter-spacing: -0.02em;
            margin-bottom: 0.5rem;
        }
        .page-banner .breadcrumb {
            background: transparent;
            padding: 0;
            margin: 0;
        }
        .page-banner .breadcrumb-item,
        .page-banner .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
        }
        .page-banner .breadcrumb-item.active {
            color: var(--secondary);
        }
        .page-banner .breadcrumb-item + .breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 767.98px) {
            .page-banner {
                padding: 3rem 0 2.5rem;
                min-height: 200px;
            }
            .page-banner h1 {
                font-size: 1.9rem;
            }
        }

        /* ===== 通用板块标题 ===== */
        .section-title {
            font-weight: 800;
            font-size: 2rem;
            color: var(--dark);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 640px;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0.75rem 0 1.25rem;
        }

        /* ===== 卡片 ===== */
        .card-modern {
            background: var(--card-bg);
            border: none;
            border-radius: var(--card-radius);
            box-shadow: var(--card-shadow);
            transition: all var(--transition);
            overflow: hidden;
            height: 100%;
        }
        .card-modern:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
        }
        .card-modern .card-img-top {
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: var(--card-radius) var(--card-radius) 0 0;
        }
        .card-modern .card-body {
            padding: 1.5rem;
        }
        .card-modern .card-title {
            font-weight: 700;
            font-size: 1.15rem;
            line-height: 1.4;
        }
        .card-modern .card-title a {
            color: var(--dark);
        }
        .card-modern .card-title a:hover {
            color: var(--primary);
        }
        .card-modern .card-text {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .card-modern .card-meta {
            font-size: 0.85rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-top: 1rem;
            padding-top: 0.75rem;
            border-top: 1px solid var(--border-color);
        }
        .card-modern .card-meta i {
            color: var(--primary);
        }
        .card-tag {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 50px;
            background: var(--primary-light);
            color: var(--primary-dark);
            letter-spacing: 0.02em;
        }

        /* ===== 特色板块 ===== */
        .featured-post {
            background: var(--card-bg);
            border-radius: var(--card-radius);
            box-shadow: var(--card-shadow);
            overflow: hidden;
            transition: all var(--transition);
        }
        .featured-post:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
        }
        .featured-post .featured-img {
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: var(--card-radius) 0 0 var(--card-radius);
            height: 100%;
            min-height: 320px;
        }
        .featured-post .featured-body {
            padding: 2.5rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-post .featured-body .badge-featured {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.75rem;
            padding: 0.3rem 1rem;
            border-radius: 50px;
            align-self: flex-start;
            margin-bottom: 0.75rem;
            letter-spacing: 0.04em;
        }
        .featured-post .featured-body h3 {
            font-weight: 800;
            font-size: 1.6rem;
            line-height: 1.3;
        }
        .featured-post .featured-body p {
            color: var(--text-light);
            font-size: 1rem;
        }
        @media (max-width: 767.98px) {
            .featured-post .featured-img {
                border-radius: var(--card-radius) var(--card-radius) 0 0;
                min-height: 220px;
            }
            .featured-post .featured-body {
                padding: 1.5rem;
            }
            .featured-post .featured-body h3 {
                font-size: 1.25rem;
            }
        }

        /* ===== 标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .tag-cloud .tag-item {
            display: inline-block;
            padding: 0.35rem 1rem;
            font-size: 0.85rem;
            font-weight: 500;
            border-radius: 50px;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            color: var(--body-text);
            transition: all var(--transition);
        }
        .tag-cloud .tag-item:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(220, 53, 69, 0.3);
        }

        /* ===== 列表样式 ===== */
        .list-modern {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .list-modern li {
            padding: 0.85rem 0;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
        }
        .list-modern li:last-child {
            border-bottom: none;
        }
        .list-modern li i {
            color: var(--primary);
            font-size: 1.1rem;
            margin-top: 0.25rem;
            flex-shrink: 0;
        }
        .list-modern li a {
            color: var(--body-text);
            font-weight: 500;
        }
        .list-modern li a:hover {
            color: var(--primary);
        }
        .list-modern li .list-meta {
            font-size: 0.8rem;
            color: var(--text-light);
            margin-left: auto;
            flex-shrink: 0;
        }

        /* ===== 排行榜 / 数据块 ===== */
        .rank-card {
            background: var(--card-bg);
            border-radius: var(--card-radius);
            box-shadow: var(--card-shadow);
            padding: 1.5rem;
            transition: all var(--transition);
            height: 100%;
        }
        .rank-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
        }
        .rank-card .rank-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 2.2rem;
            height: 2.2rem;
            border-radius: 50%;
            font-weight: 800;
            font-size: 1rem;
            background: var(--dark);
            color: #fff;
            flex-shrink: 0;
        }
        .rank-card .rank-number.top {
            background: var(--secondary);
            color: var(--dark);
        }
        .rank-card .rank-title {
            font-weight: 700;
            font-size: 1rem;
        }
        .rank-card .rank-stat {
            font-size: 0.85rem;
            color: var(--text-light);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--card-bg);
            border-radius: var(--card-radius);
            box-shadow: var(--card-shadow);
            padding: 2.5rem;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 1.25rem 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            font-weight: 700;
            font-size: 1.05rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            color: var(--dark);
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            color: var(--primary);
            transition: transform var(--transition);
        }
        .faq-answer {
            color: var(--text-light);
            font-size: 0.95rem;
            padding-top: 0.75rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-mid) 100%);
            border-radius: var(--card-radius);
            padding: 3.5rem 3rem;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.06;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: var(--text-white);
            font-weight: 800;
            font-size: 2rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            max-width: 640px;
        }
        .cta-section .btn-cta {
            background: var(--secondary);
            color: var(--dark);
            font-weight: 700;
            padding: 0.85rem 2.5rem;
            border-radius: 50px;
            border: none;
            font-size: 1.05rem;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(255, 193, 7, 0.3);
        }
        .cta-section .btn-cta:hover {
            background: var(--secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(255, 193, 7, 0.4);
        }
        @media (max-width: 767.98px) {
            .cta-section {
                padding: 2.5rem 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* ===== 页脚 ===== */
        .footer-custom {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 4rem 0 0;
            margin-top: var(--section-gap);
        }
        .footer-custom .footer-brand {
            color: var(--text-white);
            font-weight: 800;
            font-size: 1.4rem;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer-custom .footer-brand i {
            color: var(--secondary);
        }
        .footer-custom h5 {
            color: var(--text-white);
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 1.2rem;
            letter-spacing: 0.04em;
        }
        .footer-custom .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-custom .footer-links li {
            margin-bottom: 0.6rem;
        }
        .footer-custom .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .footer-custom .footer-links a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-custom .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.5rem 0;
            margin-top: 2.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-custom a[aria-label] {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .footer-custom a[aria-label]:hover {
            color: var(--secondary);
        }

        /* ===== 通用工具 ===== */
        .bg-soft-primary {
            background: var(--primary-light);
        }
        .text-primary-custom {
            color: var(--primary);
        }
        .gap-section {
            padding: var(--section-gap) 0;
        }
        .gap-section-sm {
            padding: 3rem 0;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1199.98px) {
            :root {
                --section-gap: 4rem;
            }
        }
        @media (max-width: 991.98px) {
            .section-title {
                font-size: 1.7rem;
            }
        }
        @media (max-width: 767.98px) {
            :root {
                --section-gap: 3rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.4rem;
            }
            .card-modern .card-body {
                padding: 1.25rem;
            }
        }

        /* ===== 骨架屏过渡 ===== */
        .skeleton {
            background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
            background-size: 200% 100%;
            animation: shimmer 1.5s infinite;
            border-radius: 0.4rem;
        }
        @keyframes shimmer {
            0% {
                background-position: 200% 0;
            }
            100% {
                background-position: -200% 0;
            }
        }

        /* ===== 分页 ===== */
        .pagination-custom .page-link {
            color: var(--dark);
            border: 1px solid var(--border-color);
            border-radius: 0.4rem;
            margin: 0 0.15rem;
            padding: 0.5rem 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
        }
        .pagination-custom .page-link:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .pagination-custom .page-item.active .page-link {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(220, 53, 69, 0.3);
        }

/* roulang page: article */
:root {
            --primary: #0b1a30;
            --primary-light: #1a2d4a;
            --accent: #e8b830;
            --accent-hover: #d4a520;
            --accent-glow: rgba(232, 184, 48, 0.35);
            --bg-dark: #070f1a;
            --bg-card: #0f1e32;
            --bg-section: #0a1525;
            --text-white: #f5f5f0;
            --text-light: #c8c8c0;
            --text-muted: #8a8a80;
            --border-color: rgba(232, 184, 48, 0.15);
            --border-glow: rgba(232, 184, 48, 0.25);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 30px rgba(0,0,0,0.5), 0 0 0 1px var(--border-color);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.7), 0 0 0 1px var(--border-glow);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-base: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-base);
            background: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-hover); }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; letter-spacing: -0.01em; }
        .container { max-width: var(--container-max); padding-left: 1.5rem; padding-right: 1.5rem; margin: 0 auto; }

        /* navbar */
        .navbar-custom {
            background: linear-gradient(135deg, rgba(11,26,48,0.98) 0%, rgba(7,15,26,0.98) 100%);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            padding: 0.6rem 0;
            box-shadow: 0 2px 30px rgba(0,0,0,0.5);
        }
        .navbar-custom .navbar-brand {
            font-weight: 800;
            font-size: 1.55rem;
            color: var(--accent);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            letter-spacing: -0.02em;
            text-shadow: 0 0 20px var(--accent-glow);
        }
        .navbar-custom .navbar-brand i { font-size: 1.4rem; }
        .navbar-custom .navbar-brand:hover { color: var(--accent-hover); }
        .navbar-custom .nav-link {
            color: var(--text-light);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .navbar-custom .nav-link:hover { color: var(--accent); background: rgba(232,184,48,0.06); }
        .navbar-custom .nav-link.active {
            color: var(--accent);
            background: rgba(232,184,48,0.1);
            text-shadow: 0 0 8px var(--accent-glow);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 1.1rem;
            right: 1.1rem;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--accent-glow);
        }
        .navbar-toggler { border-color: rgba(232,184,48,0.3); color: var(--accent); padding: 0.4rem 0.6rem; }
        .navbar-toggler:focus { box-shadow: 0 0 0 2px var(--accent-glow); }
        .navbar-toggler-icon { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%23e8b830' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E"); }

        /* hero banner */
        .article-hero {
            position: relative;
            padding: 5rem 0 4rem;
            background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark) 100%);
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7,15,26,0.3) 0%, rgba(7,15,26,0.85) 100%);
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero .article-category {
            display: inline-block;
            background: var(--accent);
            color: var(--bg-dark);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 0.3rem 1rem;
            border-radius: 50px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
            margin-bottom: 1rem;
        }
        .article-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-white);
            max-width: 900px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.4);
            line-height: 1.2;
            margin-bottom: 1.2rem;
        }
        .article-hero .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        .article-hero .article-meta i { margin-right: 0.4rem; color: var(--accent); }

        /* main content */
        .article-main {
            padding: 3rem 0 4rem;
            background: var(--bg-section);
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .article-body .article-featured-img {
            border-radius: var(--radius-md);
            margin-bottom: 2rem;
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border: 1px solid var(--border-color);
        }
        .article-body .article-summary {
            font-size: 1.15rem;
            color: var(--text-light);
            border-left: 3px solid var(--accent);
            padding-left: 1.5rem;
            margin-bottom: 2rem;
            font-style: italic;
            background: rgba(232,184,48,0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }
        .article-body .article-content {
            font-size: 1rem;
            color: var(--text-light);
            line-height: 1.85;
        }
        .article-body .article-content p { margin-bottom: 1.4rem; }
        .article-body .article-content h2, .article-body .article-content h3 { color: var(--text-white); margin-top: 2rem; margin-bottom: 1rem; }
        .article-body .article-content h2 { font-size: 1.6rem; border-bottom: 1px solid var(--border-color); padding-bottom: 0.5rem; }
        .article-body .article-content h3 { font-size: 1.3rem; }
        .article-body .article-content ul, .article-body .article-content ol { margin-bottom: 1.4rem; padding-left: 1.5rem; }
        .article-body .article-content li { margin-bottom: 0.4rem; }
        .article-body .article-content blockquote {
            border-left: 3px solid var(--accent);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            background: rgba(232,184,48,0.05);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body .article-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
        .article-body .article-content a:hover { color: var(--accent-hover); }
        .article-body .article-content img { border-radius: var(--radius-md); margin: 1.5rem 0; border: 1px solid var(--border-color); }

        /* article footer (tags, share) */
        .article-footer-extra {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        .article-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
        .article-tags .tag {
            background: rgba(232,184,48,0.1);
            color: var(--accent);
            font-size: 0.8rem;
            padding: 0.25rem 1rem;
            border-radius: 50px;
            border: 1px solid rgba(232,184,48,0.2);
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: var(--accent); color: var(--bg-dark); border-color: var(--accent); }
        .article-share { display: flex; gap: 0.8rem; align-items: center; }
        .article-share span { color: var(--text-muted); font-size: 0.9rem; }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(232,184,48,0.08);
            color: var(--text-light);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            font-size: 1rem;
        }
        .article-share a:hover { background: var(--accent); color: var(--bg-dark); border-color: var(--accent); transform: translateY(-2px); }

        /* article navigation */
        .article-nav {
            margin-top: 2rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: space-between;
        }
        .article-nav a {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: var(--bg-card);
            color: var(--text-light);
            padding: 0.7rem 1.5rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            font-size: 0.95rem;
            max-width: 48%;
        }
        .article-nav a:hover { background: rgba(232,184,48,0.08); color: var(--accent); border-color: var(--border-glow); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
        .article-nav a i { color: var(--accent); }

        /* related posts */
        .related-section {
            padding: 3.5rem 0;
            background: var(--bg-dark);
            border-top: 1px solid var(--border-color);
        }
        .related-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 2rem;
            text-align: center;
        }
        .related-section h2 i { color: var(--accent); margin-right: 0.5rem; }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--border-glow); }
        .related-card img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-bottom: 1px solid var(--border-color);
        }
        .related-card .related-body { padding: 1.2rem 1.2rem 1.5rem; }
        .related-card .related-body h5 { font-size: 1rem; font-weight: 600; margin-bottom: 0.5rem; }
        .related-card .related-body h5 a { color: var(--text-white); }
        .related-card .related-body h5 a:hover { color: var(--accent); }
        .related-card .related-body .text-muted { font-size: 0.8rem; color: var(--text-muted) !important; }
        .related-card .related-body .badge-cat {
            display: inline-block;
            background: rgba(232,184,48,0.1);
            color: var(--accent);
            font-size: 0.7rem;
            padding: 0.15rem 0.8rem;
            border-radius: 50px;
            border: 1px solid rgba(232,184,48,0.15);
            margin-bottom: 0.5rem;
        }

        /* faq */
        .faq-section {
            padding: 3.5rem 0;
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
        }
        .faq-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 2rem;
            text-align: center;
        }
        .faq-section h2 i { color: var(--accent); margin-right: 0.5rem; }
        .accordion-custom { --bs-accordion-bg: var(--bg-card); --bs-accordion-border-color: var(--border-color); --bs-accordion-btn-color: var(--text-white); --bs-accordion-btn-bg: var(--bg-card); --bs-accordion-active-bg: rgba(232,184,48,0.08); --bs-accordion-active-color: var(--accent); --bs-accordion-body-color: var(--text-light); border-radius: var(--radius-md); overflow: hidden; }
        .accordion-custom .accordion-item { border: 1px solid var(--border-color); margin-bottom: 0.5rem; border-radius: var(--radius-sm) !important; overflow: hidden; }
        .accordion-custom .accordion-button { font-weight: 600; font-size: 1rem; color: var(--text-white); background: var(--bg-card); box-shadow: none; padding: 1rem 1.2rem; }
        .accordion-custom .accordion-button:not(.collapsed) { background: rgba(232,184,48,0.06); color: var(--accent); }
        .accordion-custom .accordion-button::after { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23e8b830'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E"); }
        .accordion-custom .accordion-body { color: var(--text-light); font-size: 0.95rem; padding: 1rem 1.2rem 1.2rem; border-top: 1px solid var(--border-color); }

        /* cta */
        .cta-section {
            padding: 3.5rem 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark) 100%);
            border-top: 1px solid var(--border-color);
            text-align: center;
        }
        .cta-section h2 { font-size: 2rem; font-weight: 700; color: var(--text-white); margin-bottom: 0.8rem; }
        .cta-section p { color: var(--text-light); font-size: 1.05rem; max-width: 600px; margin: 0 auto 1.8rem; }
        .cta-section .btn-cta {
            display: inline-block;
            background: var(--accent);
            color: var(--bg-dark);
            font-weight: 700;
            font-size: 1.05rem;
            padding: 0.8rem 2.5rem;
            border-radius: 50px;
            border: none;
            transition: var(--transition);
            box-shadow: 0 4px 20px var(--accent-glow);
        }
        .cta-section .btn-cta:hover { background: var(--accent-hover); transform: translateY(-3px); box-shadow: 0 8px 30px var(--accent-glow); color: var(--bg-dark); }
        .cta-section .btn-cta i { margin-right: 0.5rem; }

        /* footer */
        .footer-custom {
            background: linear-gradient(180deg, rgba(11,26,48,0.98) 0%, rgba(7,15,26,0.99) 100%);
            border-top: 1px solid var(--border-color);
            padding: 3rem 0 1.5rem;
            color: var(--text-light);
        }
        .footer-custom .footer-brand { font-size: 1.4rem; font-weight: 800; color: var(--accent); margin-bottom: 0.8rem; display: flex; align-items: center; gap: 0.5rem; }
        .footer-custom h5 { font-size: 1rem; font-weight: 600; color: var(--text-white); margin-bottom: 1rem; }
        .footer-custom .footer-links { list-style: none; padding: 0; margin: 0; }
        .footer-custom .footer-links li { margin-bottom: 0.5rem; }
        .footer-custom .footer-links a { color: var(--text-muted); font-size: 0.9rem; transition: var(--transition); }
        .footer-custom .footer-links a:hover { color: var(--accent); padding-left: 3px; }
        .footer-custom .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 1.5rem;
            margin-top: 2rem;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .footer-custom a[aria-label] i { transition: var(--transition); }
        .footer-custom a[aria-label]:hover i { color: var(--accent); transform: translateY(-2px); }

        /* not found */
        .not-found-box {
            text-align: center;
            padding: 4rem 2rem;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .not-found-box i { font-size: 3rem; color: var(--accent); margin-bottom: 1rem; }
        .not-found-box h2 { font-size: 1.8rem; color: var(--text-white); margin-bottom: 1rem; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 1.5rem; }
        .not-found-box .btn-back {
            display: inline-block;
            background: var(--accent);
            color: var(--bg-dark);
            font-weight: 600;
            padding: 0.6rem 2rem;
            border-radius: 50px;
            transition: var(--transition);
        }
        .not-found-box .btn-back:hover { background: var(--accent-hover); transform: translateY(-2px); }

        /* responsive */
        @media (max-width: 992px) {
            .navbar-custom .navbar-nav { background: rgba(7,15,26,0.95); border-radius: var(--radius-md); padding: 0.8rem; margin-top: 0.5rem; border: 1px solid var(--border-color); }
            .navbar-custom .nav-link.active::after { display: none; }
            .article-hero h1 { font-size: 2rem; }
            .article-body { padding: 1.8rem; }
        }
        @media (max-width: 768px) {
            .article-hero { padding: 3rem 0 2.5rem; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-hero .article-meta { font-size: 0.85rem; gap: 0.8rem; }
            .article-body { padding: 1.2rem; border-radius: var(--radius-md); }
            .article-body .article-summary { font-size: 1rem; padding-left: 1rem; }
            .article-footer-extra { flex-direction: column; align-items: flex-start; }
            .article-nav a { max-width: 100%; width: 100%; justify-content: center; }
            .related-section h2 { font-size: 1.4rem; }
            .faq-section h2 { font-size: 1.4rem; }
            .cta-section h2 { font-size: 1.5rem; }
            .cta-section p { font-size: 0.95rem; }
            .footer-custom .col-md-4, .footer-custom .col-md-2, .footer-custom .col-md-3 { margin-bottom: 1.5rem; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.3rem; }
            .article-hero .article-category { font-size: 0.7rem; }
            .article-body { padding: 1rem; }
            .article-body .article-content { font-size: 0.95rem; }
            .related-card .related-body { padding: 1rem; }
            .cta-section .btn-cta { width: 100%; }
        }

/* roulang page: category2 */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --secondary: #1d3557;
            --secondary-light: #2a4a7a;
            --accent: #f4a261;
            --gold: #e9c46a;
            --dark: #0d1b2a;
            --dark-light: #1b2d45;
            --bg: #f8f9fa;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-white: #f1f1f1;
            --border: #e0e0e0;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.15);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', Roboto, system-ui, -apple-system, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== 导航 ===== */
        .navbar-custom {
            background: rgba(13, 27, 42, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 0.6rem 0;
            border-bottom: 2px solid rgba(230, 57, 70, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
            transition: var(--transition);
        }

        .navbar-custom .navbar-brand {
            color: var(--text-white);
            font-weight: 800;
            font-size: 1.5rem;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .navbar-custom .navbar-brand i {
            color: var(--gold);
            font-size: 1.6rem;
        }
        .navbar-custom .navbar-brand:hover {
            color: var(--gold);
        }

        .navbar-custom .nav-link {
            color: rgba(255, 255, 255, 0.8);
            font-weight: 500;
            padding: 0.6rem 1.2rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            font-size: 0.95rem;
        }
        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link:focus {
            color: #fff;
            background: rgba(230, 57, 70, 0.15);
        }
        .navbar-custom .nav-link.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.35);
        }
        .navbar-custom .nav-link.active::after {
            display: none;
        }

        .navbar-toggler {
            border-color: rgba(255, 255, 255, 0.25);
            padding: 0.4rem 0.6rem;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.4);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== 页面头部 Banner ===== */
        .page-banner {
            position: relative;
            padding: 7rem 0 5rem;
            background: linear-gradient(135deg, var(--dark) 0%, var(--secondary) 60%, var(--dark-light) 100%);
            overflow: hidden;
            min-height: 340px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 80%, rgba(230, 57, 70, 0.2) 0%, transparent 70%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            margin-bottom: 0.6rem;
        }
        .page-banner .breadcrumb-custom {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
        }
        .page-banner .breadcrumb-custom a {
            color: var(--gold);
        }
        .page-banner .breadcrumb-custom a:hover {
            color: #fff;
        }
        .page-banner .lead {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.2rem;
            max-width: 680px;
            margin-top: 0.5rem;
        }

        /* ===== 板块通用 ===== */
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            font-weight: 800;
            font-size: 2.2rem;
            margin-bottom: 0.5rem;
            color: var(--dark);
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 2.5rem auto;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0.8rem auto 1.2rem auto;
        }
        .section-divider-left {
            margin-left: 0;
        }

        /* ===== 卡片 ===== */
        .card-tip {
            background: var(--bg-card);
            border: none;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-tip:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .card-tip .card-img-top {
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .card-tip .card-body {
            padding: 1.6rem 1.5rem 1.2rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-tip .card-title {
            font-weight: 700;
            font-size: 1.15rem;
            margin-bottom: 0.6rem;
            color: var(--dark);
        }
        .card-tip .card-title a {
            color: inherit;
        }
        .card-tip .card-title a:hover {
            color: var(--primary);
        }
        .card-tip .card-text {
            color: var(--text-light);
            font-size: 0.92rem;
            flex: 1;
            margin-bottom: 1rem;
        }
        .card-tip .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-light);
            border-top: 1px solid var(--border);
            padding-top: 0.8rem;
            margin-top: auto;
        }
        .card-tip .card-meta .badge-tip {
            background: var(--primary);
            color: #fff;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.75rem;
        }
        .card-tip .card-meta .badge-tip.gold {
            background: var(--gold);
            color: var(--dark);
        }
        .card-tip .card-meta .badge-tip.secondary {
            background: var(--secondary);
            color: #fff;
        }

        /* ===== 策略分类标签 ===== */
        .strategy-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            justify-content: center;
            margin-bottom: 2.5rem;
        }
        .strategy-tabs .btn-tab {
            background: transparent;
            border: 2px solid var(--border);
            color: var(--text-light);
            padding: 0.5rem 1.4rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.88rem;
            transition: var(--transition);
            cursor: pointer;
        }
        .strategy-tabs .btn-tab:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .strategy-tabs .btn-tab.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }

        /* ===== 深度文章 ===== */
        .feature-article {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
        }
        .feature-article:hover {
            box-shadow: var(--shadow-hover);
        }
        .feature-article .row {
            min-height: 380px;
        }
        .feature-article .col-article-img {
            min-height: 320px;
            background: var(--dark-light);
            position: relative;
            overflow: hidden;
        }
        .feature-article .col-article-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
            border-radius: 0;
        }
        .feature-article .col-article-body {
            padding: 2.5rem 2rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .feature-article .article-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 0.2rem 1rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            margin-bottom: 0.8rem;
            width: fit-content;
        }
        .feature-article h3 {
            font-weight: 800;
            font-size: 1.6rem;
            margin-bottom: 0.8rem;
            color: var(--dark);
        }
        .feature-article p {
            color: var(--text-light);
            font-size: 0.98rem;
            flex: 1;
        }
        .feature-article .btn-article {
            align-self: flex-start;
        }

        /* ===== 数据统计条 ===== */
        .stats-bar {
            background: var(--dark);
            color: #fff;
            padding: 3rem 0;
            position: relative;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }
        .stats-bar::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(13, 27, 42, 0.82);
        }
        .stats-bar .container {
            position: relative;
            z-index: 1;
        }
        .stat-item {
            text-align: center;
            padding: 1rem 0;
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--gold);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 0.3rem;
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            border: none;
            border-radius: var(--radius-sm);
            margin-bottom: 0.8rem;
            background: var(--bg-card);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            overflow: hidden;
        }
        .faq-accordion .accordion-button {
            font-weight: 700;
            font-size: 1.02rem;
            color: var(--dark);
            background: var(--bg-card);
            padding: 1.2rem 1.5rem;
            border: none;
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--bg-card);
        }
        .faq-accordion .accordion-button::after {
            background-size: 1rem;
        }
        .faq-accordion .accordion-body {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--dark) 100%);
            padding: 4.5rem 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 1.8rem auto;
        }
        .cta-section .btn-cta {
            background: var(--gold);
            color: var(--dark);
            font-weight: 700;
            padding: 0.9rem 2.4rem;
            border-radius: 50px;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(233, 196, 106, 0.35);
        }
        .cta-section .btn-cta:hover {
            background: #f0d060;
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(233, 196, 106, 0.45);
        }

        /* ===== 页脚 ===== */
        .footer-custom {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 3.5rem 0 0;
            border-top: 4px solid var(--primary);
        }
        .footer-custom .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 0.8rem;
        }
        .footer-custom .footer-brand i {
            color: var(--gold);
        }
        .footer-custom h5 {
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 1rem;
            letter-spacing: 0.3px;
        }
        .footer-custom .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-custom .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer-custom .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-custom .footer-links a:hover {
            color: var(--gold);
            padding-left: 4px;
        }
        .footer-custom .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.5rem 0;
            margin-top: 2.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .page-banner h1 {
                font-size: 2.6rem;
            }
            .section-title {
                font-size: 1.9rem;
            }
            .feature-article .col-article-body {
                padding: 2rem 1.5rem;
            }
            .feature-article h3 {
                font-size: 1.3rem;
            }
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 5rem 0 3rem;
                min-height: 260px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner .lead {
                font-size: 1rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
            .feature-article .col-article-img {
                min-height: 220px;
            }
            .feature-article .col-article-body {
                padding: 1.5rem 1.2rem;
            }
            .feature-article h3 {
                font-size: 1.15rem;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .navbar-custom .navbar-brand {
                font-size: 1.2rem;
            }
            .navbar-custom .nav-link {
                padding: 0.5rem 1rem;
                font-size: 0.9rem;
            }
            .strategy-tabs .btn-tab {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            .card-tip .card-img-top {
                height: 160px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner .lead {
                font-size: 0.88rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .card-tip .card-body {
                padding: 1.2rem 1rem;
            }
            .card-tip .card-title {
                font-size: 1rem;
            }
            .stat-item .stat-number {
                font-size: 1.6rem;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-section .btn-cta {
                padding: 0.7rem 1.6rem;
                font-size: 0.9rem;
            }
            .footer-custom .footer-brand {
                font-size: 1.1rem;
            }
            .footer-custom .row>div {
                margin-bottom: 1.2rem;
            }
            .feature-article .col-article-body {
                padding: 1.2rem 1rem;
            }
            .feature-article h3 {
                font-size: 1rem;
            }
            .strategy-tabs {
                gap: 0.4rem;
            }
            .strategy-tabs .btn-tab {
                padding: 0.3rem 0.8rem;
                font-size: 0.75rem;
            }
        }